| 1. |
- Landtblom, Anna Ravn, et al.
(författare)
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Childbirth rates in women with myeloproliferative neoplasms
- 2024
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Ingår i: Leukemia. - : SPRINGERNATURE. - 0887-6924 .- 1476-5551.
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Tidskriftsartikel (refereegranskat)abstract
- Myeloproliferative neoplasms (MPN) are associated with inferior pregnancy outcome, however, little is known about fertility and childbearing potential in women with MPN. In this study we aimed to describe reproductive patterns, as well as to quantify risk of miscarriage and stillbirth. Women aged 15-44 years with an MPN diagnosis 1973-2018, were identified in Swedish health care registers, and age-matched 1:4 to population controls. We identified 1141 women with MPN and 4564 controls. Women with MPN had a lower rate of childbirth (hazard ratio [HR] with 95% confidence interval was 0.78 (0.68-0.90)). Subgroup analysis showed that the rate was not significantly reduced in essential thrombocythemia, HR 1.02 (0.86-1.22) while the HR was 0.50 (0.33-0.76) in PV and 0.45 (0.28-0.74) in PMF. The risk of miscarriage was not significantly increased before MPN diagnosis, the HR during follow-up after diagnosis was 1.25 (0.89-1.76). Women with MPN were more likely to have had a previous stillbirth. Women with MPN had fewer children at diagnosis, and fewer children in total. In conclusion, the childbirth rate was lower among women with MPN than controls, but not among women with essential thrombocythemia.
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| 2. |
- Landtblom, Anna Ravn, et al.
(författare)
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Pregnancy and childbirth outcomes in women with myeloproliferative neoplasms-a nationwide population-based study of 342 pregnancies in Sweden
- 2022
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Ingår i: Leukemia. - : SPRINGER NATURE. - 0887-6924 .- 1476-5551. ; 36:10, s. 2461-2467
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Tidskriftsartikel (refereegranskat)abstract
- Pregnancy and childbirth in women with myeloproliferative neoplasms (MPN) are reported to be associated with maternal thrombosis, hemorrhage, and placental dysfunction. To assess the risks of adverse events in pregnancy in women with MPN, we performed a large population-based study using Swedish health care registers, and included all pregnancies that had reached gestational week 22 (prior to 2008, week 28) during the years 1973-2017 in women with MPN. Control pregnancies were matched 1:1 for age, calendar year, and parity. We identified 342 pregnancies in 229 women with MPN. Preterm birth was significantly increased in pregnancies in MPN, 14% compared to 4% of pregnancies in controls (p < 0.001). Correspondingly, low birth weight (<2500 g) was also significantly increased in MPN pregnancies (p = 0.042). Stillbirth was rare, with two events (0.6%) in MPN, none in controls. Maternal thrombotic complications occurred in three (1%) of the pregnancies in MPN patients, compared to none in controls. Pregnancy-related bleeding affected 14% of pregnancies in MPN and 9% in controls (p < 0.110). Cesarean section was significantly more common in pregnancies in MPN. Incidence was 12.2 per 100.000 pregnancies. In summary, preterm birth was an important complication in MPN pregnancies, while maternal complications were less common than previously reported.
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| 3. |
- Ahlstrand, Erik, 1974-, et al.
(författare)
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Highly Reduced Survival in Essential Thrombocythemia and Polycythemia Vera Patients with Vascular Complications during Follow-up
- 2020
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Ingår i: European Journal of Haematology. - : Munksgaard Forlag. - 0902-4441 .- 1600-0609. ; 104:3, s. 271-278
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To explore the relative importance of risk factors, treatments and blood counts for the occurrence of vascular complications and their impact on life expectancy in Essential Thrombocythemia (ET) and Polycythemia Vera (PV).METHODS: Nested case-control study within the Swedish MPN registry. From a cohort of 922 ET patients and 763 PV patients, 71 ET and 81 PV cases with vascular complications were compared to matched controls.RESULTS: Incidence of vascular complications were 2.0 and 3.4 events per 100 patient-years in ET and PV, respectively. At diagnosis, no significant risk factor differences were observed between cases and controls in neither of the diseases. At the time of vascular event, ET complication cases did not differ significantly from controls but in PV, cases had significantly higher WBCs and were to a lesser extent treated with antithrombotic and cytoreductive therapy. Life expectancy was significantly decreased in both ET and PV cases compared to controls.CONCLUSIONS: The risk of vascular complications is high in both ET and PV and these complications have a considerable impact on life expectancy. The protective effect of antithrombotic and cytoreductive therapy for vascular complications in PV underscores the importance of avoiding undertreatment.
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| 4. |
- Landtblom, Anna Ravn, et al.
(författare)
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Risk of infections in patients with myeloproliferative neoplasms-a population-based cohort study of 8363 patients
- 2021
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Ingår i: Leukemia. - : NATURE PUBLISHING GROUP. - 0887-6924 .- 1476-5551. ; 35, s. 476-484
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Tidskriftsartikel (refereegranskat)abstract
- Infections are a common complication in patients with many hematologic malignancies, however, whether patients with myeloproliferative neoplasms (MPN) also are at an increased risk of infections is largely unknown. To assess the risk of serious infections, we performed a large population-based matched cohort study in Sweden including 8 363 MPN patients and 32,405 controls using high-quality registers between the years 1992-2013 with follow-up until 2015. The hazard ratio (HR) of any infection was 2.0 (95% confidence interval 1.9-2.0), of bacterial infections 1.9 (1.8-2.0), and of viral infections 2.1 (1.9-2.3). One of the largest risk increases was that of sepsis, HR 2.6 (2.4-2.9). The HR of any infection was highest in primary myelofibrosis 3.7 (3.2-4.1), and significantly elevated in all MPN subtypes; 1.7 (1.6-1.8) in polycythemia vera and 1.7 (1.5-1.8) in essential thrombocythemia. There was no significant difference in risk of infections between untreated patients and patients treated with hydroxyurea or interferon-alpha during the years 2006-2013. These novel findings of an overall increased risk of infections in MPN patients, irrespective of common cytoreductive treatments, suggest the increased risk of infection is inherent to the MPN.
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| 5. |
- Ravn Landtblom, Anna
(författare)
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Morbidity and childbirth in myeloproliferative neoplasms
- 2023
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Myeloproliferative neoplasms (MPN) are a family of chronic hematologic cancers, characterized by excess proliferation of myeloid cell lineages, or fibrosis of the bone marrow. Patients with MPN generally have a long expected survival. To elucidate morbidities during the disease course, e.g. second malignancies and infections, and outcome and prognosis of pregnancy and childbirth, we performed four large population-based cohort studies based on data from Swedish health registers, and compared outcomes to those of matched controls. We found that patients with MPN are at increased risk of second cancers, both solid and hematologic. The hazard ratio (HR) of developing a solid cancer was 1.6 (I.5-1.7), where skin cancers had the largest risk increase, but cancers of the brain, lung, pancreas, kidney and endocrine organs were also significantly increased. Patients with MPN also had a twofold risk of infections, HR 2.0 (1.9-2.0), leading to hospitalization or death compared to controls. An increase was evident in all subtypes of MPN, but significantly higher in patients with primary myelofibrosis. Among women with MPN, there were 342 pregnancies beyond gestational week 22/28 in women with MPN in Sweden 1973-2018. Preterm birth, in particular iatrogenic preterm birth, was significantly increased, but not thrombosis, bleeding or other obstetric complications. Low birthweight was similarly increased to preterm birth, but there was no increase in low birthweight babies in pregnancies with term delivery. The incidence of childbirth during the last decade was 12.2 per 100,000 childbirths. In women with MPN birthrates were reduced by 22%, HR 0.78 (0.67-0.90) compared to matched controls. In a subgroup analysis, the HR of childbirth was not reduced in patients with essential thrombocythemia. The rate of miscarriage was not statistically significantly increased, HR 1.25 (0.89-1.76.) Stillbirth was significantly more common in MPN patients prior to the MPN diagnosis, (p=0.013). In conclusion, there is significant morbidity in the MPN population, with increased risk of second cancers and infections. Pregnancy outcomes are generally better than previously anticipated, however there is an increased risk of preterm birth, and birthrates in MPN are lower than in the general population.
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